There can be no answer to the question. A 3-digit number is an integer between 100 and 999 (inclusive).
2
The answer is vague but correct . Take any two prime numbers whose combined digit length is 501 and their product will generate a 500 or a 501 digit number.
3.27 and 3.273.17 and 3.37
1348.
16, 25, 34, 43, 52, 61, 70 Seven of them.
73 satisfies your condition.
715 and 777
69
The answer is vague but correct . Take any two prime numbers whose combined digit length is 501 and their product will generate a 500 or a 501 digit number.
3.27 and 3.273.17 and 3.37
1348.
16, 25, 34, 43, 52, 61, 70 Seven of them.
73 satisfies your condition.
There are only two prime numbers that are consecutive numbers, 2 and 3. Their product is 2 x 3 = 6. The first prime numbers are 2, 3, 5, and 7 and the only two consecutive prime numbers whose product is a single digit are 2 and 3. (The next two consecutive prime numbers, 3 and 5, have a two-digit product.)
1.48
Even in the tiniest village in England, there are no two-digit telephone numbers.
Two (or four) digits added together cannot equal 42. Two-digit numbers multiplied together cannot equal 82.
Factors of 654 in pairs: 1 x 654, 2 x 327, 3 x 218, 6 x 109